<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<title>Document</title>
	<style>
	body {
		background-color: #ccc;
	}
	div {
		color: #ccc;
		font: 700 80px "微软雅黑";
	}
	div:first-child {
		text-shadow: 1px 1px 1px #000, -1px -1px 1px #fff;
	}
	div:last-child {
		text-shadow: -1px -1px 1px #000, 1px 1px 1px #fff;
	}
	</style>
</head>
<body>
	<div>我是凸起的文字</div>
	<div>我是凹下的文字</div>
</body>
</html>